Sevenoaks, Kent
Extractor fan installation in Sevenoaks
Bathroom, kitchen and utility fans sized to the Part F rates, ducted outside and tested. Covering Sevenoaks and TN13, TN14 and TN15.
- From £195 inc VAT per fan
- Free survey
If the bathroom mirror in your Sevenoaks home stays steamed up, the fan probably is not moving enough air.
We cover Sevenoaks and the surrounding TN13, TN14 and TN15 postcodes as part of our work across Kent. Surveys for new installations are free on the UK mainland, with a written quote afterwards.
Extractor fans in Sevenoaks at a glance
- Town
- Sevenoaks, Kent
- Postcode districts
- TN13, TN14 and TN15
- Nearby
- Chelsfield (6 miles), Tonbridge (6 miles) and Biggin Hill (7 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
How we approach extractor fans in Sevenoaks
The rate a fan delivers through a real duct run is often far lower than the number on the box, which is why we size to the room and test the result. For England, Approved Document F gives minimum intermittent extract rates: 15 litres a second for a bathroom, 30 for a kitchen with a cooker hood (60 without one), 30 for a utility room and 6 for a WC.
New fan through an outside wall
Core drilled, sleeved, wired from a fused spur and sealed outside.
Ducted to outside through the loft
Insulated duct to a roof, ridge or soffit outlet so warm moist air does not condense in the loft.
Guide prices in Sevenoaks
| Work | Guide price |
|---|---|
| New extractor fan through an outside wall (core drilled, wired, tested) (per fan) | £380–£600 inc VAT |
| New ducted fan to outside through the loft or ceiling (insulated duct, roof or soffit outlet) (per fan) | £490–£825 inc VAT |
| Inline fan for a shower room or en-suite (loft-mounted, one or two ceiling grilles) (per room) | £600–£975 inc VAT |
These ranges use our South East rates. Prices include VAT at 20%. You get a fixed written price before any work is booked.
When to get it looked at
- Mirror still steamed up 20 minutes after a shower
- Mould on the bathroom ceiling or around the window
- The fan runs but a sheet of toilet paper does not stick to the grille
Rules that apply in England
In England, ventilation is covered by Part F of the Building Regulations and its guidance, Approved Document F (2021 edition). It sets extract rates for kitchens, bathrooms and utilities and asks for mechanical ventilation to be commissioned and recorded.
Questions from Sevenoaks
Do you cover Sevenoaks and nearby?
Yes. We cover Sevenoaks and nearby places including Chelsfield, Tonbridge, Biggin Hill and Orpington. Send your postcode and we will confirm.
Can an extractor fan vent into the loft?
No. A fan should discharge to outside, because warm, moist air dumped in the loft condenses on the cold roof timbers and causes mould and rot there instead.
Should I get a fan with a humidity sensor?
A humidistat fan switches on when the air gets damp and runs until it clears, which suits family bathrooms and rentals where people forget the switch. A continuous-running fan is another good option.
What is the price of new extractor fans in Sevenoaks?
Guide prices for Sevenoaks use South East rates: like-for-like extractor fan replacement (existing duct and wiring) is typically £195 to £325 inc VAT per fan. We confirm a fixed price in writing before any work starts.
Is the survey free in Sevenoaks?
For new installations on the UK mainland, yes. The survey is free and the quote that follows is fixed and in writing. Servicing, testing and repair visits are charged, and we confirm the cost before booking.
Tell us how many rooms need fans in your Sevenoaks home and we will quote them together.
Extractor fans near Sevenoaks
More services in Sevenoaks
Get a guide price in two minutes
Answer a few questions for a price range, or send photos and we will come back to you with a written quote.